Mocking

Mocking Modules

Example

add.ts

export const add = (a: number, b: number) => a + b;

add.test.ts

import { test } from 'xbell';

test.browser.mock('./add', async ({ importActual, fn }) => {
  const { add } = await importActual<typeof import('./add')>('./add')
  return {
    add: fn(add),
  };
});

test.browser('mocking modules: number', async ({ expect }) => {
  const { add } = await import('./add');
  expect(add(1, 1)).toBe(2);
  expect(add).toHaveBeenCalled();
  expect(add).toHaveBeenCalledWith(1, 1);
  expect(add).toHaveReturnedWith(2);
});